2N Lift8 v1.6.0 User Manual
Page 86
86
Separate Microphone Mounting
If the microphone is supplied separately on a 25×25 mm large board with
self-adhesive foil and with a cable, you can mount it easily behind any hole in the panel
(keep the minimum hole diameter of 5 mm or a group of smaller holes of the same
total area). Just glue the microphone directly onto the required place from behind (be
sure to degrease and clean the surface carefully before mounting!).
Requirements
The minimum distance between the speaker and microphone centres is
90 mm. A lower distance may lead to acoustic feedback. A greater distance
(within the available 1m cable) does not matter.
Make sure that the glued-on microphone does not pick up (even partially!) the
acoustic pressure from the space behind the panel. Such sensing might result in
acoustic feedback since the speaker strongly radiates sound into the cavity
Separate Speaker Mounting
The speaker is equipped with a cable and can be separated from the electronics by
simply being slid out within the reach of the cables delivered (1 m). This option is
useful where there is not enough space for the whole electronic equipment. Fit the
loudspeaker according to the instructions below:
While gluing choose such procedures or adhesives that prevent membrane
damage by adhesives and volatile substances, or heat.
We recommend you to keep the speaker sealed to eliminate vibrations and
ensure electric insulation.
Frequently Asked Questions Concerning Speaker
Can I use a speaker of my own?
Yes, but keep the impedance of 64 Ω. Doing this, however, you assume
responsibility for sufficient volume and frequency range.
Can I use a longer cable for the speaker?
You can use a longer cable for the speaker, but not for the microphone.